Company Introduction of the Iron Rods For Construction/Concrete Material

CNBM International Corporation is the most import and export platform of CNBM group(China National Building Material Group Corporation) ,which is a state-owned enterprise, ranked in 270th of Fortune Global 500 in 2015.

With its advantages, CNBM International are mainly concentrate on Cement, Glass, Iron and Steel, Ceramics industries and devotes herself for supplying high quality series of refractories as well as technical consultancies and logistics solution.

Packaging & Delivery of the Iron Rods For Construction/Concrete Material

Packaging Detail

Sea worthy packing /as per customer's packing instruction

Delivery Detail

15 ~ 40 days after receiving the deposit

FAQ

Are you a trading company or manufacturer?

Manufacturer

What’s the MOQ?

1000m2

What’s your delivery time?

15-20 days after downpayment received

Do you Accept OEM service?

Yes

what’s your delivery terms?

FOB/CFR/CIF

What's the Payment Terms?

30% as deposit,70% before shipment by T/T

Western Union acceptable for small amount.

L/C acceptable for large amount.

Scrow ,Paybal,Alipay are also ok

Why choose us?

Chose happens because of quality, then price, We can give you both. Additionally, we can also offer professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent customer solution proposals.

What's your available port of Shipment?

Main Port, China

What’s your featured services?

Our service formula: good quality+ good price+ good service=customer's trust

Where are your Market?

Covering more than 160 countries in the world

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- Self introduction

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- Inquire about price/MOQ

Q:What is the maximum tensile force of 25 thread steel?

The maximum tensile force is the first to know that the thread steel belongs to several grades of steel; the tensile strength is x, and the cross sectional area is the maximum tensile force.Tensile strength of thread steel of 25 diameter = tensile strength of the grade steel, x, sectional area =41000, Newton, ~61000, Newton=4100kgf~6100kgf.

Q:Does the grade three thread steel with "E" have the same information price as the ordinary three grade thread steel? Is there a big difference?

As far as I know, the price of information may not be divided into "E" and "E", but there are mandatory requirements on the standard. It is estimated that the price will not be much different.

Q:How to distinguish the quality of thread steel?

Inferior steel thin and thin, often appear inadequate discontent, because manufacturers in order to achieve large negative tolerance, finished products before a few of the pressure reduction is too large, iron type is small, filled with dissatisfaction.

Q:Why can not the finish thread steel be welded?

This is generally superior to alloy steel. Carbon content is relatively high, poor weldability, welding conditions are very demanding, but also produce high temperature welding, it is easy to destroy the original material performance. So, under normal circumstances, on-site welding is not allowed.

Q:How to judge the quality of thread steel?

Appearance check the necking fracture, peeling, oil pollution, damage, deformation, diameter error, third is the best for the test, according to the provisions of the current "reinforced concrete hot-rolled ribbed bar" GB1499 current national sample sent to the laboratory test, the sample collected for tests of mechanical properties, such as more than three are qualified, steel is good the!

Q:What's the difference between rebar and thread steel?

Different strength. The design strength of round steel (HPB235) is 210MPa; the strength of thread steel is higher than that of round bar; the design strength of HRB335 is 300MPa; the design strength of HRB400 is 360MPa.

Cold drawn steel wire should be the same as round steel and thread steel! Their forming process and the meaning of the place used are different, and the quota is also different, cold drawn steel wire is cold drawn steel wire, strictly speaking, there is no mix together.

Q:What is the relationship between the price and the hot coil steel prices?

The rebar prices are more special, in addition to energy-saving emission reduction, I personally think that the relationship between market supply and demand. In previous years, coil prices relatively high prices and price, usually in the coil as a goal. I think the price is not reasonable, but I don't understand, because I'm not an expert. Of course, the experts don't understand.

Q:Why is the earthing device forbidden to use thread steel instead of round steel as lap steel bar?

H, R, and B are the first letters in English for hot-rolled (Hotrolled), ribbed (Ribbed) and reinforced (Bars) three words. Hot rolled ribbed bar is divided into two levels, HRB335 (old No. 20MnSi), three HRB400 (20MnSiV, 20MnSiNb, old No. 20Mnti), four grade HRB500 three grade.

Q:The effect of adding alum on thread steel

The melting point of vanadium is very high, often with niobium, tantalum, tungsten, molybdenum, called refractory metal. Ductile, hard, without magnetism. Resistant to hydrochloric acid and sulfuric acid ability, and resistance to salt water corrosion performance than most stainless steel.